XML DOM

test.xml

--------------------------------------------------------------------------

<?xml version="1.0" encoding="EUC-KR" standalone="no" ?>

<books>

<book id="11">

<name>XML1</name>

<author>홍길동</author>

<price>100</price>

</book>

<book id="22">

<name>고길동</name>

<author>200</author>

<price>200</price>

</book>

<book id="33">

<name>김철수</name>

<author>300</author>

<price>300</price>

</book>

<book id="44">

<name>이영희</name>

<author>400</author>

<price>400</price>

</book>

</books>

XmlTest.java

--------------------------------------------------------------------------

import java.io.File;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.transform.Transformer;

import javax.xml.transform.TransformerFactory;

import javax.xml.transform.dom.DOMSource;

import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Attr;

import org.w3c.dom.Document;

import org.w3c.dom.Element;

import org.w3c.dom.NamedNodeMap;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

public class XmlTest {

public static void main(String[] args) throws Exception {

// createByDOM();

parseByDOM();

}

private static void createByDOM() throws Exception {

DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

DocumentBuilder builder = factory.newDocumentBuilder();

Document doc = builder.newDocument();

Element rootElement = doc.createElement("company");

doc.appendChild(rootElement);

Element staff = doc.createElement("staff");

rootElement.appendChild(staff);

Attr attr = doc.createAttribute("id");

attr.setValue("1");

staff.setAttributeNode(attr);

Element firstname = doc.createElement("firstname");

firstname.appendChild(doc.createTextNode("yong"));

staff.appendChild(firstname);

Element nickname = doc.createElement("nickname");

nickname.appendChild(doc.createTextNode("mkyoung"));

staff.appendChild(nickname);

Element salary = doc.createElement("salary");

salary.appendChild(doc.createTextNode("100"));

staff.appendChild(salary);

DOMSource xmlSource = new DOMSource(doc);

StreamResult outputTarget = new StreamResult(new File("output.xml"));

TransformerFactory transformerFactory = TransformerFactory.newInstance();

Transformer transformer = transformerFactory.newTransformer();

transformer.transform(xmlSource, outputTarget);

}

private static void parseByDOM() throws Exception {

File file = new File("test.xml");

DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

DocumentBuilder builder = factory.newDocumentBuilder();

Document doc = builder.parse(file);

doc.getDocumentElement().normalize();

if (doc.hasChildNodes()) {

printNode(doc.getChildNodes());

}

}

private static void printNode(NodeList nodeList) {

for (int i = 0; i < nodeList.getLength(); i++) {

Node node = nodeList.item(i);

if (node.getNodeType() != Node.ELEMENT_NODE) continue;

if (node.getChildNodes().getLength() == 1) {

System.out.println("\t" + node.getNodeName() + "=" + node.getTextContent());

} else {

System.out.println(node.getNodeName());

}

if (node.hasAttributes()) {

NamedNodeMap nodeMap = node.getAttributes();

for (int j = 0; j < nodeMap.getLength(); j++) {

Node attrNode = nodeMap.item(j);

System.out.println("\t" + "attr : " + attrNode.getNodeName() + "=" + attrNode.getNodeValue());

}

}

if (node.hasChildNodes()) {

printNode(node.getChildNodes());

}

}

}

}